Mimitsu Surf Break

Lat Long: 32.33° N 131.61° E

Mimitsu Surf Forecast and Surf Report

Issued: 2 am 06 Aug 2026 (local time)

Forecast update in  hr  min

Today's Mimitsu sea temperature is
28.8° C
0.4° 

Mimitsu surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.


Mimitsu surf forecast from 5 Aug 2026:

  • Best quality surf: Thursday 6 Aug, 9AM (local time) - 18ft (5.5m), 15s period, ESE swell with cross-shore winds.
  • Most powerful swell: Thursday 6 Aug, 6PM (local time) - 21ft (6.5m), 15s period, ESE swell with 18,081 kJ wave energy.
  • Next surfable swell (1★+): Thursday 6 Aug, 9AM (local time) - 18ft (5.5m), 15s period with ESE swell.

Best Forecast Surf Conditions for Mimitsu this week:

The surf forecast for Mimitsu over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Thursday (Aug 06) at 9AM. The primary swell is predicted to be 5.5m and 15s period. The wind is predicted to be cross-shore as the swell arrives.

The most powerful waves expected at Mimitsu in the next 16 days are 6.5m 15s and forecast to arrive on Thursday (Aug 06) at 6PM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 4.0m 13s period and expected on Friday (Aug 07) at 9PM.

Wave TypeTime (JST) & Date Wave Height & Period
Next good surf (1 star+) 9AM (Thu 6th Aug)18ft (5.5m) 15s
Best Surf 9AM (Thu 6th Aug)18ft (5.5m) 15s
Most Powerful 6PM (Thu 6th Aug)21ft (6.5m) 15s

Table - best surf conditions forecast for Mimitsu over the next 16 days.


The Lowdown

Alright, let’s get into it. The long-range models are showing a wild ride for Mimitsu, but you’re gonna need to be patient. The first week is a write-off, honestly. We’ve got a big, unruly swell pushing through on Thursday the 6th and into Friday the 7th, with wave heights hitting 18ft to 20ft. The energy readings are massive, like 13,173 and 16,759, but it's coming in from the ESE and the wind is howling cross-shore and cross-on. It’s a washing machine out there. The swell is way too big for this river break, and with that wind, it’s just a mess. Kite surfers might be having a blast, but for us paddle surfers, it’s a no-go. The following days, from the 8th through the 10th, the swell drops but the wind stays cross-on, and the forecast is just calling it “poor surf conditions.” We're looking at 7ft to 10ft of lumpy, choppy junk. Not worth paddling out for.

Now, here’s where the patience part comes in. After that first pulse fades, there’s a real lull. From the 11th to the 14th, we’ve got tiny, weak waves around 3ft to 6ft. The energy is pitiful, readings in the 200s and 600s. It’s marginal at best, and some windows are just flat and poor. You’d be fighting for ankle-biters. Keep your board in the car but don’t get your hopes up.

Then, on Saturday the 15th, things finally line up. The morning and afternoon both show light offshore or glassy conditions from the NNE and WNW. The swell is a bit more organised at 6ft from the E with an 11-second period. The energy is still modest at 803, but the clean conditions make it look like the best bet in this whole stretch. It’ll be small but clean, and at Mimitsu, a river break, that long period could make it a bit straight, but the lack of wind will help. This is a highlight, but it’s not a big-wave day.

After that, we go into another stretch of mediocrity from the 16th to the 19th. Cross-shore winds, rain, and weak swell around 4ft to 6ft with short periods. It’s just not doing anything. The energy readings are low, consistently in the 300s and 600s. It’s a real grind.

But hold on, because the long-range stuff is showing a proper reward for your patience. On Thursday the 20th, we’ve got a standout morning. The swell is 8ft from the ESE with a 10-second period, and the wind is light and cross-off from the NE. The energy jumps to 1,086, and the forecast is calling it “excellent surf conditions for experienced surfers.” This is the one to circle on the calendar. Mimitsu is a river break, so a solid 8ft of ESE groundswell with clean conditions could be firing. The water temp is 84°, which is right around average for this time of year, so it’s warm out there. Just remember, this is over a week and a half away, so treat it as promising, not a done deal.

Friday the 21st also has a decent morning with 7ft from the E and light offshore winds, but the afternoon looks to shift and drop off. So, the real standout in this whole 16-day window is the morning of the 20th. Before that, the 15th is your best early call for some clean, smaller waves. Everything else is either too big and messy or too small and weak. Stay patient, keep your eye on the 20th, and don’t bother with the rest.

Rusty.

Short Range Forecast

Heavy rain (total 150mm), heaviest during Sat afternoon. Warm (max 29°C on Thu morning, min 26°C on Sat afternoon). Mainly fresh winds.

Days 4-6 Weather Summary

Heavy rain (total 68mm), heaviest during Sun morning. Warm (max 29°C on Tue morning, min 24°C on Tue night). Wind will be generally light.

Thursday
6
Friday
7
Saturday
8
Sunday
9
Monday
10
Tuesday
11
Wednesday
12
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
Rating
(10 max)
!
!
!
0
0
0
0
0
0
0
0
0
0
0
2
1
1
1
2
0
2
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
5.5
ESE
15
6
ESE
15
6
SE
14
6
SE
14
5.5
SE
13
4
SSE
13
3
ESE
10
3
ESE
9
3
ESE
9
3
ESE
9
2
ESE
8
1.3
E
13
2.3
SSE
11
2.4
SSE
12
1.8
SSE
11
1
E
12
0.9
E
11
0.9
E
11
1
E
12
1
E
11
1.2
E
11
Wave Graph
Metric surfscale
Energy kJ
13173
16759
15773
12258
10676
5610
1738
1658
1230
1183
567
595
1194
1578
799
271
195
191
284
256
345
Wind (km/h)
25
NE
35
ENE
35
ENE
35
E
30
E
25
E
30
E
35
E
25
E
25
E
20
E
25
ESE
25
ESE
20
ESE
10
ESE
5
SE
5
ESE
5
WNW
5
NE
10
SE
5
W
Wind State
cross
cross
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
on
on
cross-off
glassy
on
cross-off
High Tide
12:20PM1.47m
11:41PM1.70m
2:21PM1.46m
00:48AM1.67m
4:02PM1.56m
2:09AM1.68m
5:00PM1.68m
3:21AM1.74m
5:39PM1.79m
4:19AM1.83m
6:12PM1.87m
5:08AM1.92m
6:42PM1.93m
Low Tide
5:29PM1.13m
7:08AM0.69m
6:55PM1.27m
8:32AM0.61m
8:47PM1.31m
9:41AM0.49m
10:06PM1.27m
10:34AM0.36m
10:58PM1.18m
11:19AM0.26m
11:39PM1.08m
11:58AM0.20m
00:14AM0.97m
rain showers
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
light rain
cloud
part cloud
part cloud
clear
clear
part cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
5:30
5:31
5:31
5:31
5:33
5:33
5:33
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
7:07
7:06
7:05
7:04
7:04
7:02
7:01
 mm
1
5
21
10
10
22
16
39
26
11
12
24
10
8
3
Temp °C
29
28
27
28
28
27
27
27
27
27
27
27
27
27
27
29
29
26
29
29
26
Feels °C
29
28
27
29
29
28
28
29
29
29
29
29
28
29
30
32
33
31
32
32
30
  • Map Icons:
  • Break
  • Live Wave Height (m)
  • Live Wind Speed (km/h)
  • Surf Rating (10 Max)
  • Ocean Swells (m)
  • Wind Speed (km/h)
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Information about the Mimitsu Surf forecast

The above surf forecast table for Mimitsu provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Mimitsu can be found by selecting the local surf guide option on the grey menu. Our Mimitsu surf forecast is unique since it includes wave energy (power) that defines the real feel of the surf rather than just the height or the period. If you surf the same spot (Mimitsu) regularly then make a mental note of the wave energy from the surf forecast table each time you go. Very soon you may start to choose your surf days based on the wave energy alone combined with our forecast of favourable offshore wind conditions. Our star ratings will help here and of course you will also find the usual wave height and period predictions on our surf forecasts as well as a full break down of the swell components under our advanced users option (to reveal that, click the little Einstein character under the tide times).

Further information to help with frequently asked questions about our surf forecast for Mimitsu may be found under the help tab on the top menu and also by moving your mouse over the question marks on the surf forecast table itself. Please always bear in mind that the forecast is for near-shore open water and local factors at each surf break influence the actual breaking wave height, such as the beach / reef profile, water depths offshore and shelter.

Mimitsu is 25 km (16 miles) from the city of Takanabe. If you plan a holiday in Kyu Shu, look for hotels and other accommodation in Takanabe. Takanabe has rooms for a wide range of budgets as well as car hire and transport links.

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